Real Time Clocks

Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral.  They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.

Part Number	Manufacturer	Description	Quantity	Price	Option
BQ4802LYDWR	Texas Instruments	IC RTC CLK/CALENDAR PAR 28-SOIC	0	$3.38	RFQ
DS1685S-3+T&R	Maxim Integrated	IC RTC CLK/CALENDAR PAR 24-SOIC	0	$3.33	RFQ
RX-8035SA:AA PURE SN	Epson	IC RTC RECORDER I2C SER 14SOP	0	$3.33	RFQ
RX-8731LC:B PURE SN	Epson	IC RTC CALENDAR I2C 12VSOJ	0	$3.28	RFQ
RX-4581NB:B ROHS	Epson	IC RTC CLK/CALENDAR SPI 22-SON	0	$3.26	RFQ
AB-RTCMK-32.768KHZ-T	Abracon LLC.	IC RTC CLK/CALENDAR I2C 8-SMT	0	$3.23	RFQ
RX-8581JE:B3 I2C-BUS	Epson	IC RTC CLK/CALENDAR I2C 20-VSOJ	0	$0.00	RFQ
RX-8025SA:AC PURE SN	Epson	IC RTC CAL I2C/2-WIRE SER 14SOP	0	$3.17	RFQ
RTC-4574SA:B:PURE SN	Epson	IC REAL TIME CLOCK/CALENDAR	0	$3.17	RFQ
DS1374C-3#T&R	Maxim Integrated	IC RTC BINARY CNT I2C 16-SOIC	0	$3.16	RFQ